That the average red blood cell lives for 120 days!
That there are 2.5 trillion (give or take) of red blood cells in your body at any moment!
Considering all the tissues and cells in your body, 25 million new cells are being produced each second!
A red blood cell can circumnavigate your body in under 20 seconds!
Our heart beats around 100,000 times every day! and in n a year, a person`s heart beats 40,000,000 times.
Nerve Impulses travel at over 400 km/hr (250 mi/hr)!
That our lungs inhale over two million litres of air every day, without even thinking. They are large enough to cover a tennis court!
50,000 of the cells in your body will die and be replaced with new cells, all while you have been reading this sentence!
Scientists have counted over 500 different liver functions.
In 1 square inch of skin there lies 4 yards of nerve fibers, 1300 nerve cells, 100 sweat glands, 3 million cells, and 3 yards of blood vessels.
The structural plan of a whale's, a dog's, a bird's and a man's 'arm' are exactly the same.
The world`s first test-tube twins were born in June 1981.
There are 45 miles of nerves in the skin of a human being.
Most people blink about 25 times a minute.
One human brain generates more electrical impulses in a single day than all of the world’s telephones put together. ...[Did you know|more]
Each square inch of human skin consists of twenty feet of blood vessels.
Nerve impulses to and from the brain travel as fast as 90 miles per hour.
Your stomach has to produce a new layer of mucus every two weeks otherwise it will digest itself.
Your left lung is smaller than your right lung to make room for your heart.
You use an average of 43 muscles for a frown.
You use an average of 17 muscles for a smile.
Every two thousand frowns creates one wrinkle.
The average human blinks his eyes 6,205,000 times each year.
The average human produces a quart of saliva a day or 10,000 gallons in a lifetime.
Every person has a unique tongue print.
The average human's heart will beat 3000 million times in their lifetime.
The average human will pump 48 million gallons of blood in their lifetime.
You burn 26 calories in a one minute kiss.
The average human body contains enough: Sulphur to kill all fleas on an average dog, Carbon to make 900 pencils, Potassium to fire a toy cannon, Fat to make 7 bars of soap, Phosphorus to make 2,200 match heads, and enough Water to fill a ten gallon tank
A sneeze zooms out of your mouth at over 100 m.p.h.
If you were freeze-dried, 10% of your body weight would be from the microorganisms on your body.
According to the World Health Organization, there are approximately 100 million acts of sexual intercourse each day.
Your ears and nose continue to grow throughout your entire life.
When you eat meat and drink milk in the same meal, your body does not absorb any of the milk's calcium. It is best to have 2 hours between the milk and meat intake.
Only humans and horses have hymens.
The tooth is the only part of the human body that can't repair itself.
Every human spent about half an hour as a single cell.
